Lighthouse · Core Web Vitals · PageSpeed

Your site slowed down after the last deploy. Did you know?

psiLynx monitors Core Web Vitals and Lighthouse scores across all your pages — so you catch regressions before Google or your clients do.

  • 7-day trial
  • No credit card required
  • Mobile and desktop included
Sound familiar?

The problems psiLynx was built to solve

Developers & Teams

You deployed. Site slowed. Found out 2 weeks later — from a client complaint.

Every deploy is a blind spot. Regressions go undetected until the damage is done.

SEO Specialists

200 pages. PSI checks one at a time. Which ones are failing Core Web Vitals right now?

You can't fix what you can't see. At scale, manual checking isn't an option.

Agencies

Every Monday: copy scores into a spreadsheet, explain the numbers to the client.

Manual reporting is a cost you're carrying invisibly — every single week.

Batch check · agency-client.com
Progress847 / 1000 URLs
85% complete~2 min remaining
agency-client.com/home✓ 91
agency-client.com/about✓ 78
agency-client.com/services⟳ Running
agency-client.com/blog· Pending
agency-client.com/contact· Pending
✓ 847 done  ·  ⟳ 1 running  ·  · 152 pendingMobile + Desktop
⏱
~4.5 hrs saved
vs manual checks · 1000 URLs

1,000 pages audited in 20 minutes. Not 2 days.

At scale, manual PageSpeed checks aren't an option. psiLynx runs Lighthouse across your entire URL list simultaneously — mobile and desktop — so you always have a complete picture.

  • Import URLs manually, via CSV, sitemap, or JSON — then run the whole list with one click.

  • Every URL is checked on both mobile and desktop simultaneously — one check, full coverage.

  • Results update in real time as the batch runs — no waiting, no page refreshes.

example.com/home · Performance
↓ Regression detected
60708090100DeployMar 1Mar 8Mar 15Mar 22Mar 29Apr 5Apr 12
Before deploy
91
After deploy
64
After fix
90
⚠️Regression detected2 min ago
Performance dropped 91 → 64 after deploy
example.com/home · Mobile · LCP +2.1s

Catch performance regressions before users do.

Every deploy risks a performance drop. A slowed LCP costs conversions. A CLS spike hurts rankings. psiLynx tracks metric history per URL and flags regressions — before your clients notice.

  • Full history of every metric — Performance, LCP, CLS, INP, FCP, TTFB — per URL over time.

  • Visual trend chart makes it easy to correlate score drops with specific deploys or changes.

  • Automated regression alerts via email — you know before your clients do.

Issues · /checkout 3 issues found
HIGH Render-blocking resources LCP +1.4s

3 scripts in <head> delay first render for all users. Affects 100% of page loads.

→ Add defer to analytics.js, tag-manager.js, chat-widget.js
MED Images not lazy-loaded +340KB initial

14 below-fold images loaded immediately. Add loading="lazy" to reduce initial payload.

LOW No explicit font-display CLS +0.08

Font swap causes layout shift on load. Add font-display: swap to @font-face declarations.

Get the fix, not just the score.

Every check surfaces the exact issues — render-blocking scripts, unoptimized images, missing font-display — ranked by impact. Not raw JSON. Not a 90-page audit.

  • Every check identifies the root cause — not just what score dropped, but exactly why.

  • Issues ranked by impact: HIGH problems get fixed first, LOW problems don't waste your time.

  • Each issue includes a specific fix — not a recommendation to "improve performance".

Everything you need to monitor Core Web Vitals at scale

Bulk Lighthouse

Run mobile and desktop Lighthouse audits across your entire URL list at once. Import via CSV, sitemap, or paste — 1,000 URLs checked in 20 minutes, not 2 days.

CrUX Field Data

See what Google actually measures for rankings — real Chrome user data, not a simulated lab test. Field metrics update automatically every week from the Chrome UX Report.

Issues & Recommendations

After every check, psiLynx identifies the root causes — render-blocking scripts, unoptimized images, missing font-display — and ranks them by impact so you fix the right thing first.

Regression Alerts

Set a score threshold and get an email the moment a URL drops below it. Catch regressions after every deploy — before your clients or users notice.

Shareable Reports

Every project report has a public shareable link. Your client opens it in a browser and sees full scores, trends, and CWV pass rates — no account, no login required.

Scheduled Checks

Automate audits on a daily, weekly, or custom cron schedule. Results are waiting when you open the dashboard — no manual triggering, no forgotten checks.

7-day free trial · No credit card required

Stop finding out from clients. Start monitoring performance.

Your first audit takes 5 minutes. Import a URL list or sitemap — and see exactly where your Core Web Vitals stand.